Wrench



- E. GRAF ET AL v WRENCH Filed July 19, 1924 137 1233 67%; ji -milder$321 ATTORNEY WITNESS:

Patented July 13, 1926.

UNITED STATES ERNEST GRAF AND ALEXANDER GRAF, OF MONROE, OREGON.

WRENCH.

5 Application filed July 19, 1924.

This invention relates to improvements in wrenches and has for an objectthe provision of a wrench which is capable of a rapid initial adjustmentand an accurate subsequent adjustment so that it may be quickly andaccurately adjusted for use.

To this end, the invention provides a wrench which includes a handle orshank enscrew having novel means for detachably holding the same inengaged position whereby the screw may be disengaged to permit of arapid adjustment or the wrench and afterward engaged to permit of anaccurate adjustment, the means for holding the screw in engaged positionalso serving to provide means whereby the screw may be operated toadjust the wrench.

With the above and other objects in view, the invention further includesthe following novel features and details of construction, to behereinafter more fully described, illustrated in the accompanyingdrawings and pointed out in the appended claim.

In the drawings Figure 1 is an elevation of a wrench con structed inaccordance with the invention, the adjusting screw being shown indisengaged position by dotted lines.

Figure 2 is an enlarged section on the line 22 of Figure 1.

Figure 3 is an enlarged fragmentary section illustrating the connectionbetween the screw and the slidable or movable jaw.

Figure 4 is a detail perspective View of the combined swiveled andpivoted connecting member.

Referring to the drawings in detail wherein like characters of referencedenote corresponding parts, the reference character indicates the shankof the wrench which provided at one end with a handle or grip 11 and atits opposite end with a stationary jaw 12, while mounted for slidingmovement upon the shank 10 is a movable jaw 18.

The shank 10 is provided along one of its edges with teeth 14 which areadapted to be engaged by a screw 15, the latter being carried by themovable jaw 13. For this purpose, there is pivotally secured to themovable jaw as indicated at 16, a connecting member 17. This member isadapted to extend within a socket 18 provided in one end of the screwand to have a swiveled connection with the said member through themedium of pins 19. These pins extend Serial No. 727,002.

through the screw 15 and engage an annular groove 20 which extendsaround the adjacent end of the connecting member 17.

Extending from the opposite end of the screw 15 is a pin or rod 21. Thispin or rod is adapted to be engaged by opposed spring lingers which aresecured to spaced arms extending from the shank 10. The lingers 22 areprovided with opposed arcuate seats 2% which receive the pin 21, whilethe arms extend from a band or collar which is secured around the shank10 as indicated at 26.

It will be apparent from the foregoing description and accompanyingdrawings that the screw 15 may be moved to the position shown by thedotted lines in Figure 1 so as to permit of a rapid adjustment of thejaw 13. The screw may then be moved inward so as to engage the teethlat, being held in engaged position by the spring fingers 22. The screwmay then be rotated to obtain a subsequent accurate adjustment of thejaw.

In order to provide for the convenient manipulation of the screw 15-,the outer end of the pin 21 is provided with a knurled operating knob27.

The invention is susceptible of various changes in its form, proportionsand minor details of construction and the right is herein reserved tomake such changes as properly fall within the scope of the ap pendedclaim.

Having described the invention what is claimed is A wrench comprising ashank having teeth along one edge, a body rigid with the shank, a bodyslidable upon the shank, an adjusting screw, a swivel and pivotalconnectic-n between one end of the screw and the slidable body wherebysaid screw member may be moved into and out of engagement with the teethof the shank, a pin extending from the opposite end of the screw, acollar embracingthe shank, spaced arms integral with and extending inparallel relation from the collar, opposed spring fingers carried by andlocated between the arms, said spring lingers having arcuate seatswhereby the pin is yieldably engaged by-said fingers to hold the screwin engaged position. i

In testimony whereof we affix our signatures.

ERNEST GRAF. ALEXANDER GRAF.

